A systematic review and meta-regression analysis of randomized controlled trials examined the effectiveness of mindfulness-based and mindfulness-informed interventions in workplace settings. The findings indicate that these interventions produce small to moderate beneficial effects on employee mental health outcomes, including reductions in stress, anxiety, and burnout, as well as improvements in well-being. The analysis also suggests that intervention characteristics, such as duration and delivery format, may moderate these effects, but the overall evidence is limited by heterogeneity across studies and potential publication bias.
A 5-day meditation training focusing on body and breath awareness did not increase pain tolerance more than no intervention in healthy adults. Pain tolerance actually increased in both the meditation and control groups, with a larger increase in the control group. Naloxone infusion showed a trend toward decreasing pain tolerance in both groups. The meditation group made fewer errors on an attention test. Blood samples detected morphine and morphine metabolites sporadically with no clear pattern. The intended link between meditation, attention, mindfulness, and pain tolerance was not supported under conditions designed to avoid placebo effects.